"We Need to Talk About Kevin" by Scottish film director Lynne Ramsay is one of the contenders for the prestigious Palme d'Or prize at the Cannes film festival this year. The film tells the story of a mother dealing with a horrific act committed by her son. Actress Tilda Swinton (C) and the cast spoke about 'We Need to Talk About Kevin' while at Cannes.Duration: 01:33